Ophthalmic mounting



2&64376 Dec. 125, 1936.; G. A. ELLESTAD ET A!= OPHTHALMI C MOUNTINGFiled March 28, 1935 GERHARD A. ELLESTAD '2 CHESTER G.SALMON INVENTORSPatented Dec. 15, 1936 UNITED STATES PATENT OFFICE OPHTHALMIC MOUNTINGApplication March 28,

2 Claims.

The present invention relates to ophthalmic mountings and moreparticularly to nose engaging members which are known as nose pads orguards.

In the making of spectacles having rockable nose pads or guards, it hasbeen the general practice to attach the pad loosely but permanently tothe pad holding arm. Thus, when a pad was damaged or broken, it wasusually necessary to remove the pad holding arm from the spectaclemounting and substitute an entire new arm and pad assembly. With sometypes of bridge even this form of repair was impossible and an entirenew bridge was necessary. Such repairs were necessarily laborious andexpensive.

One of the objects of this invention is to provide an improved nose padfor an ophthalmic mounting. Another object is to provide an improvedrockable mounting for a nose pad. A further object is to provide animproved ophthalmic mounting from which the nose pad may be readily andeasily attached or removed. These and other objects and advantagesreside in certain novel features of construction, arrangement andcombination of parts as will hereinafter be more fully set forth andpointed out in the appended claims.

Referring to the drawing:

Fig. 1 is a fragmentary View of an ophthalmic mounting embodying thisinvention.

Fig. 2 is a sectional view showing one form of nose pad connection.

Fig. 3 is a sectional view showing another form of nose pad connection.

Fig. 4 is a rear view of the pad holding arm and connection shown inFigs. 2 and 3.

Fig. 5 is a sectional view showing a third form of nose pad connection.

Fig. 6 is a rear view of the pad holding arm and connection shown inFig. 5.

In the drawing Ill designates a spectacle bridge secured to a lens H bya mounting 12. A pad holding arm [3 is fixed at one end to the mounting12 and, at the other end, rockably supports the nose engaging member ornose pad l4.

Referring to the embodiment shown in Fig. 2, the nose pad M has a recessformed by the wall i5 and the recess is partially closed by theoverhanging flange 16. A thin and preferably metallic plate I1, largerthan the opening formed by the flange i6, is positioned within therecess and is provided with a threaded opening l8. Adjacent its end, thepad holding arm I3 is 1935, Serial No. 13,420

provided with a. convex portion l9 having an aperture 20. A screw 2|having a convex head 22 larger than the aperture 20, is passed throughthe aperture and threaded into the opening 18. In its extreme position,the screw 2| bears against the nose pad [4 tending to flex the plate lloutwardly into a convex form and is thus held rigid with the nose pad.The convex portion IQ of the arm I3 bears against the convex plate lland thus .a free rocking movement is provided. The nose pad l4 may becomposed of metal or may be made of a non-metallic substance such ascelluloid or zylonite. When a relatively soft substance such ascelluloid or zylonite is used, the screw 2|, would tend to injure thenose pad l4 and in this case a metallic bearing plate 23 is provided asshown in Fig. 3. The plate 23 lies close against the nose pad I4 and thescrew 2| presses against this plate.

In the form illustrated in Figs. 5 and 6, a relatively heavy metallicplate 24 is positioned within the recess in the pad 14 and held in placeby the flange I6. A screw 25 is fixed in the plate 24 and the aperturedconvex portion [9 of the arm I3 is held on the screw 25 by a nut 26.

From the foregoing it will be apparent that we are able to attain theobjects of our invention and provide a new and improved nose pad and anew and improved mounting for same so that the nose pad may be readilyand inexpensively removed and replaced. Various modifications can, ofcourse, be made without departing from the spirit of our invention.

We claim:

1. In an ophthalmic mounting, a nose pad having a recess and a flangeoverhanging said recess, two metallic plates larger than the opening insaid flange positioned within said recess, a screw threaded in the outerplate and bearing against the inner plate, a pad holding arm having anaperture for loosely engaging said screw and means on said screw forpreventing removal of said arm.

2. In an ophthalmic mounting, a nose pad having a recess and aflangeoverhanging said recess, a plate larger than the opening in said flangepositioned within said recess, a screw threaded in said plate andbearing against said nose pad, a pad holding arm having an aperture forloosely engaging said screw and means on said screw for preventingwithdrawal of said arm.

' GERI-IARD A. ELLESTAD.

CHESTER G. SALMON.

